CN101688631B

CN101688631B - Branch device for noninterruptive flow boring

Info

Publication number: CN101688631B
Application number: CN2008800177803A
Authority: CN
Inventors: 金济贤; 山下保; 横山大平
Original assignee: Suiken Co Ltd
Current assignee: Suiken Co Ltd
Priority date: 2007-06-21
Filing date: 2008-04-07
Publication date: 2013-03-27
Anticipated expiration: 2028-04-07
Also published as: JP5023340B2; US20090065070A1; EP2159467B1; CA2684935A1; TWI418425B; TW200920518A; US8156959B2; JP2010116929A; CN101688631A; WO2008155943A1; EP2159467A1; JPWO2008155943A1; EP2159467A4; CA2684935C

Abstract

A branch device for noninterruptive flow boring suitable for connecting branch piping with an existing pipe (1) by partially boring the pipe wall (12) of the existing pipe (1) using a boring machine (3) equipped with a hole saw (4) and forming an opening (11) in the pipe wall (12) comprises a plurality of cases (21, 22) split in the circumferential direction R of the existing pipe (1), an enclosed case (20) formed integrally with the first split case (21) out of the plurality of split cases (21, 22) and having a pipe portion (27) projecting in the radial direction C of the existing pipe (1) and branching, a valve element (5) having an arcuate or circular cross-section and opening/closing the opening (28) of the branch pipe portion (27) by rotating along the circumferential direction R of the existing pipe (1) between the inner circumferential surface (29) of the split case (20) and the outer circumferential surface (13) of the existing pipe (1), and a mechanism (50) for rotating the valve element (5).

Description

Branch device for noninterruptive flow boring

Technical field

The present invention relates to extract the branch unit of the perforation usefulness that continues to flow of branch out for laid pipe from running water pipe or gas pipe etc.

Background technique

In the past, use the punch that is equipped with hole opening saw, the method for in the situation of not cutting off the water supply a part of laying pipe being bored a hole is by called optical imaging (with reference to patent documentation 1).

Patent documentation 1: TOHKEMY 2002-321109 (summary)

Fundamental order of this perforation engineering etc. is carried out simple explanation.

At first, shown in Figure 20 A, use by a pair of

cover

21,22 enclosed hoods that consist of 2 of cutting apart and cover a part of having laid pipe 1.Cut apart cover 21 valve bodies 100 that are provided with as gate valve above-mentioned first.Then, punch 3 being installed in above-mentioned first cuts apart on the cover 21.

Under this state, shown in Figure 20 B, start punch 3, on one side rotating spindle laying pipe 1 and getting out the perforate 11 of circle with the hole opening saw 4 of front end on one side.Then, shown in Figure 20 C, make after hole opening saw 4 retreats valve body 100.After finishing like this perforation engineering, take off punch 3, branch's pipe arrangement of regulation is connected in first cuts apart on the cover 21 and open valve body 100, branch's engineering finishes thus.

Summary of the invention

But, in above-mentioned existing device, additionally need to be used for holding the large clack box of the valve body 100 that moves up and down.Therefore, cause cost to increase.

Because valve body 100 will move up and down when pipe 1 leaves from laying, and makes the stroke of hole opening saw 4 advance and retreat elongated.Therefore, cause punch 3 to maximize.

In addition, because valve body 100 moves up and down, the height of the operation cap 101 of valve increases, and required earthing deepens.

The present invention makes in view of above-mentioned existing problem, and its purpose is to provide a kind of branch unit of the inexpensive and perforation usefulness that continues to flow that the perforation stroke is short, also can construct in the shallow situation of earthing.

In order to achieve the above object, the present invention is a kind of branch unit of the perforation usefulness that continues to flow, it is suitable for using the punch that is equipped with hole opening saw that the part of the tube wall of laying pipe is bored a hole and forms perforate at described tube wall, and laid pipe at this and connected branch's pipe arrangement, comprise: enclosed hood, this enclosed hood be included in divided on the circumferencial direction of laying pipe and around a part of having laid pipe a plurality of cut apart cover and with described a plurality of cut apart first in the cover cut apart cover integrally formed and in the footpath of laying pipe the outstanding and branched pipe section of branch upwards; Cross section is circular arc or circular valve body, at the inner peripheral surface of described enclosed hood with laid between the outer circumferential face of pipe, by rotating along the circumferencial direction of having laid pipe, the branched hole of described branched pipe section is opened and closed; Valve seat forms at described the first inner peripheral surface of cutting apart cover, contacts with described valve body when closing valve; And rotating machinery, be used for making described valve body rotation.

According to the present invention, cross section is that circular arc or circular valve body rotate in enclosed hood and the gap of laying pipe along laying pipe, therefore, need not additionally to arrange the part that clack box or valve gap etc. hold valve body.Therefore, can realize cheap and small-sized device.

In addition, circular-arc valve body is compared with flat valve body, and flexural strength is also large, therefore, valve body can be done thin.

In addition, owing to do not need to hold the part of above-mentioned valve body, the stroke of perforation also shortens thereupon.

And valve body is not to move up and down, but along the outer circumferential face rotation of laying pipe, therefore, the height of valve reduces.As a result, in the shallow situation of earthing, also can construct.

In a preferred embodiment of the invention, the cross section of described valve body is circular arc, closing valve position and not covering described perforate but with opening between the valve position that described perforate is communicated with described branched hole of described perforate and inaccessible described branched hole can covered, move back and forth along the described circumferencial direction of having laid pipe, described valve body and described valve seat are formed, along with described valve body from the described valve position rotary moving of opening to the described valve position that closes, the Distance Shortened that described valve body and described valve seat make progress in described footpath of having laid pipe.

In this embodiment's situation, described valve seat has the surface of contact that contacts with described valve body, and described surface of contact rate radius is along with described valve body closes valve position and diminishes continuously and gradually near described from the described valve position of opening.

In this embodiment's situation, along with making valve body to closing the valve direction rotation, valve body is crimped on the valve seat, and therefore, the water tightness when closing valve improves.

In another preferred embodiment of the present invention, comprise press section, at the described valve position that closes, along with described valve body further moves to closing the valve direction, described press section pushes described valve body to the described outside radially, so that described valve body is crimped on the described valve seat.

In the case, valve body is crimped on the valve seat, and therefore, the water tightness during cut-off valve improves.

In another preferred embodiment of the present invention, described valve body comprises: along the described concave surface of having laid the outer circumferential face bending of pipe, with described close valve position relative with described branched hole to convex surface, described rotating machinery comprises: the operation gear that is rotated operation outside the described enclosed hood, with with described operation engaged gears and rotate the driven gear of open-close valve at described circumferencial direction along with the rotation of described operation gear, described driven gear forms at the described convex surface of described valve body, and the surface of contact that contact with described valve seat of described convex surface is given prominence to than the surface of described driven gear on described caliber direction of having laid pipe.

In this embodiment's situation, because therefore the surface of contact of valve body, does not worry that the tooth of driven gear can affect the water tightness sealing in that radially the surface than driven gear is outstanding.

In the present invention, preferred described rotating machinery comprises: be rotated the operation gear of operation outside the described enclosed hood and with described operation engaged gears and rotate the driven gear of open-close valve at described circumferencial direction along with the rotation of described operation gear.

In the case, by outside enclosed hood, the operation gear being operated, can carry out opening and closing operations by rotary valve.

In the present invention, preferred described enclosed hood is made of two described covers of cutting apart, on the plane of inclination that tilts with respect to the imaginary plane with the axis quadrature of described branched pipe section, cut apart and cover on the connecting part and mutually combined for described two, cut apart enclosed hood in described plane of inclination as described above, the described first described branched pipe section and distance between the described connecting part of cutting apart on the cover is large in the bottom at the top ratio, disposes described operation gear on described top.

By the connecting part is tilted, form the space of configuration operation gear, by such configuration operation gear, valve body is shortened in a circumferential direction.The result can realize the miniaturization of valve body.

In the present invention, also can second cut apart cover the aforesaid operations gear is set what do not have above-mentioned branched pipe section.

In the case, need not to cut apart cover setting operation gear first, therefore can carry out bigbore perforation.

The guide portion that preferably will guide the rotation of described valve body in the present invention, is arranged on described enclosed hood

Like this, by guide portion is set, make the stable rotation of valve body.

In the present invention, also can be, described operation gear is set at the roughly caliber direction of laying pipe by axis worm screw is set to the worm gear parallel with the tube axial direction of laying pipe with axis and consists of, described driven gear described valve body form and with described worm gear interlock.

According to aforesaid way, can prevent that valve body from rotating because of deadweight.In addition, because reduction speed ratio is large, can when open and close valve, open and close with little steering force.

In the present invention, preferably first cut apart the rubber ring that cover is equipped with the sealing usefulness of ring-type around the branched hole of described branched pipe section what have described branched pipe section.

Seal by valve body being crimped on this rubber ring when the cut-off valve.

Description of drawings

Figure 1A is the general profile chart of the branch unit of expression embodiments of the invention 1, and Figure 1B is the unfolded drawing of expression valve body.

Fig. 2 A and Fig. 2 B are respectively the continue to flow general profile charts of method for punching of expression.

Fig. 3 A and Fig. 3 B are respectively the continue to flow general profile charts of method for punching of expression.

Fig. 4 A and Fig. 4 B are respectively the continue to flow general profile charts of method for punching of expression.

Fig. 5 A and Fig. 5 B are respectively the continue to flow general profile charts of method for punching of expression.

Fig. 6 A and Fig. 6 B are respectively the general profile charts of expression embodiment's 2 branch unit.

Fig. 7 is the summary unfolded drawing of this valve body of expression.

Fig. 8 A and Fig. 8 B are respectively the general profile charts of expression embodiment's 3 branch unit.

Fig. 9 is the summary unfolded drawing of this valve body of expression.

Figure 10 A and Figure 10 B are respectively the general profile charts of expression embodiment's 4 branch unit.

Figure 11 A, Figure 11 B and Figure 11 C launch side sectional view, plan view and the bottom sectional view that this valve body represents, Figure 11 D is the summary rearview that cover is cut apart in expression first.

Figure 12 A and Figure 12 B are respectively the general profile charts of this branch unit of expression.

Figure 13 A, Figure 13 B and Figure 13 C are respectively side sectional view, plan view and the bottom sectional views that expansion embodiment's 5 valve body represents, Figure 13 D is the plan view that the part of branch unit is cut in expression open.

Figure 14 A and Figure 14 B are respectively the sectional elevations of embodiment 5 branch unit.

Figure 15 A and Figure 15 B are respectively the sectional elevations of embodiment 6 branch unit.

Figure 16 A and Figure 16 B are respectively the sectional elevations of embodiment 6 branch unit.

Figure 17 A, Figure 17 B and Figure 17 C are respectively side sectional view, plan view and the bottom sectional views that expansion embodiment's 6 valve body represents, Figure 17 D is the plan view of expression branch unit.

Figure 18 A and Figure 18 B are respectively the longitudinal sections of embodiment 7 branch unit.

Figure 19 A and Figure 19 B are respectively the sectional elevations of embodiment 7 branch unit.

Figure 20 A～Figure 20 B be respectively the expression the existing method for punching that continues to flow biopsy cavity marker devices after summary side elevation.

Description of reference numerals

1: laid pipe

2,2A, 2B, 2C: branch unit

3: punch

4: hole opening saw

5: valve body

5f: the first surface of contact

11: perforate

12: tube wall

13: the outer circumferential face of having laid pipe

20: enclosed hood

Cut apart cover at 21: the first

Cut apart cover at 22: the second

25: the connecting part

27: branched pipe section

27L: the axis of branched pipe section

28: branched hole

29: the inner peripheral surface of cutting apart cover

50: rotating machinery

51: driven gear

52: the operation gear

55: guide portion

56: valve seat

56f: the second surface of contact

C: the caliber direction of having laid pipe 1

H: imaginary plane

R: the circumferencial direction of having laid pipe

Sf: plane of inclination

Embodiment

By referring to appended file description of a preferred embodiment, the present invention will be more readily apparent from clear.But embodiment and accompanying drawing only are used for diagram and explanation, are not with deciding scope of the present invention.Scope of the present invention is only determined by claims.In the accompanying drawings, the identical or suitable part of the numbering of the identical parts in several accompanying drawings expression.

Embodiment 1:

Below, embodiments of the invention are described with reference to the accompanying drawings.

Figure 1A～Fig. 5 B represents embodiment 1.

Branch unit 2:

Branch unit 2 shown in Figure 1A is used for, as shown in Figure 3A, will lay under the state that in pipe, has fluid (such as water etc.) to flow with the punch 3 that is equipped with hole opening saw 4 pipe 1 tube wall 12 part perforation and laid the perforation that continues to flow that pipe 1 is extracted branch out from this.

Shown in Figure 1A, branch unit 2 has around the enclosed hood 20 of laying pipe 1.Above-mentioned enclosed hood 20 comprises: cut apart cover 21,22 laying on pipe 1 the circumferencial direction R divided first and second, and with first to cut apart cover 21 integrally formed and in the outstanding and branched pipe section 27 of branch of the caliber direction C that lays pipe 1.

Cut apart cover 21,22:

Above-mentioned first and second cut apart cover 21,22 along roughly the imaginary plane H of quadrature is divided with the axis 27L of branched pipe section 27.Cut apart cover 21,22 and be installed in by outer embedding from the both sides of laying pipe 1 caliber direction C and lay on the pipe 1, assembled by erection bolt 61 fastening connecting parts 25.

Respectively cut apart the inner peripheral surface 29 that cover 21,22 has general outer circumferential face 13 bendings along laying pipe 1.Above-mentioned two end part of having laid the tube axial direction of pipe 1 in the connecting part 25 of respectively cutting apart cover 21,22 and inner peripheral surface 29 are formed with respectively the liner assembly department 24 of groove shape.Rubber bushing 26 is installed in this liner assembly department 24, will lay between pipe 1 and the branch unit 2 and first cuts apart cover 21 and second and cut apart and seal between covering 22.

In addition, when carrying out above-mentioned assembling, the two end part of cutting apart cover 21,22 of using rubber bushing will lay the tube axial direction of pipe 1 seal (with reference to Figure 11 D) with the outer circumferential face 13 of laying pipe 1 respectively.

Branched pipe section 27:

Shown in Fig. 2 A, in the connector portions 71 that for example flange of above-mentioned branched pipe section 27 is such punches 3 are installed.Hole opening saw 4 is sent into to the caliber direction C that lays pipe 1 by the branched hole 28 of branched pipe section 27, and thus, as shown in Figure 3A, the tube wall 12 of having laid pipe 1 is cut, thereby shown in Fig. 3 B, has laid pipe 1 at this and passed perforate 11.In addition, at the rotating center of hole opening saw 4, the center drill 41 that is used for this hole opening saw 4 is positioned is to be set up towards laying pipe 1 outstanding mode.

Valve body 5:

Shown in Figure 1A, accommodate the valve body 5 that the cross section is circular arc in above-mentioned cutting apart in the cover 21,22.Above-mentioned valve body 5 is by along cutting apart cover 21,22 inner peripheral surface 29 and having laid the outer circumferential face 13 of pipe 1 and rotated to open and close the branched hole 28 of above-mentioned branched pipe section 27 along the circumferencial direction R that lays pipe 1.

Cut apart on the

cover

21,22 at two, be wholely set the guide portion 55 (with reference to Figure 11 D) that the above-mentioned circular-arc valve body 5 of guiding rotates.

Figure 1B launches the valve body 5 of Figure 1A to represent.That is, in Figure 1B, illustrate and bend to circular-arc flat valve body 5 before.

As shown in Figure 1B, be respectively arranged with driven gear 51 in two ends of the tube axial direction L of valve body 5.On the other hand, shown in Figure 1A, cut apart cover 22 top second and be provided with the operation gear 52 that is rotated outside the enclosed hood 20.Above-mentioned driven

gear

51 and 52 interlocks of operation gear utilize the rotation of this operation gear 52 that above-mentioned driven gear 51 is rotated at above-mentioned circumferencial direction R, make thus valve body 5 rotations.Therefore, the operator makes 52 rotations of operation gear, thereby makes valve body 5 along the circumferencial direction R rotation of laying pipe 1, can make thus these valve body 5 rotary movings to the valve position that closes shown in valve position and Fig. 4 A of opening shown in Figure 1A.

Thus, driven gear 51 and operation gear 52 are configured to make the rotating machinery 50 of valve body 5 rotations.

First cut apart cover 21 what have branched pipe section 27, be circle-shaped around the branched hole 28 of above-mentioned branched pipe section 27 and sealing be installed with rubber ring (example of valve seat) 56.

When valve body 5 rotary movings to shown in Fig. 4 A close valve position the time, the first surface of contact 5f of the valve body 5 shown in the site of Figure 1B and the second surface of contact 56f of rubber ring 56 are adjacent to, shown in Fig. 4 A, above-mentioned branched hole 28 is by inaccessible, laid pipe 1 the divided cover 21 of around openings, 22 and valve body 5 airtight.

Method for punching continues to flow:

At first, have under the state of Fluid Flow in A laying in the pipe 1 of Figure 1A, in the mode of having laid the outer circumferential face 13 of pipe 1 around this branch unit 2 is installed.After this had carried out installing, the operator utilized erection bolt 61 two of assemblings to cut apart cover 21,22.In addition, above-mentioned valve body 5 is set in advance in the valve position that closes with branched hole 28 obturations of branched pipe section 27.

Then, shown in Fig. 2 A, open valve, further, the operator uses bolt 32 connector portions 31 of punch 3 to be installed in the connector portions 71 of branched pipe section 27.Like this, branch unit 2 centers on a part of having laid pipe 1 with airtight conditions.

After centering on as mentioned above, when shown in Fig. 2 B, making hole opening saw 4 while rotating along perforation direction C1 when laying pipe 1 and move, the tube wall 12 of pipe 1 has been laid in center drill 41 cuttings, and the hole opening saw 4 of rotation is positioned with respect to laying pipe 1 centered by this center drill 41.Then, as shown in Figure 3A, a part of having laid the tube wall 12 of pipe 1 is amputated by hole opening saw 4, forms perforate 11.

After stating in the use center drill 41 and hole opening saw 4 perforation, shown in Fig. 3 B, hole opening saw 4 is moved along keeping out of the way direction C2.

Then, when the operator makes 52 rotation of operation gear, by with the driven gear 51 of these operation gear 52 interlocks, valve body 5 directed sections, 55 guiding and along above-mentioned branched hole 28 close valve direction R1 rotation, the valve body 5 that is in out valve position is moved into the valve position that closes shown in Fig. 4 A.By above-mentioned valve body 5 is moved to closing valve position, valve body 5 is adjacent to the surface of rubber ring 56, and branched hole 28 is by inaccessible, laid pipe 1 with the divided cover 21 of airtight conditions, 22 and valve body 5 center on.

Then, take off bolt 32, punch 3 is moved along keeping out of the way direction C2, shown in Fig. 4 B, pull down hole opening saw 4 from branch unit 2.

After taking off above-mentioned punch 3, shown in Fig. 5 A, branch's pipe arrangement 80 is installed in the branched pipe section 27.Use bolt 82 that the connector portions 81 of branch's pipe arrangement 80 is connected with the connector portions 71 of branched pipe section 27.

Then, the operator makes 52 rotations of operation gear, and valve body 5 is rotated to the valve position of opening shown in Fig. 5 B along valve opening position R2, thus, is laying the engineering end that connects branch on the pipe 1 to branch's pipe arrangement 80.

In addition, cutting apart cover also can be divided into more than three.

The connecting part that also each can be cut apart cover each other welding is assembled and is cut apart cover.In addition, the cross section of valve body also can be circular.In this case, form the hole corresponding with branched hole 28 at this valve body.

Embodiment 2:

Fig. 6 A～Fig. 7 represents embodiment 2.

Shown in Fig. 6 A and Fig. 6 B, the operation gear 52 of branch unit 2A is arranged on first and cuts apart cover 21 top.In addition, as shown in Figure 7, driven gear 51 only is arranged on the one-sided of valve body 5.

Other structure is identical with embodiment 1, and to identical part or the suitable identical label of part mark, and the description thereof will be omitted.

Embodiment 3:

Fig. 8 A～Fig. 9 represents embodiment 3.

Shown in Fig. 8 A and Fig. 8 B, the branch unit 2B of present embodiment 3 roughly is being provided with operation gear 52 and operation cap 101 near the imaginary plane H of quadrature and at the first top 25u of cutting apart cover 21 with the axis 27L of branched pipe section 27.Therefore, it is divided on the plane of inclination Sf that tilts with respect to the imaginary plane H with the axis 27L quadrature of branched pipe section 27 to cut apart cover 21,22.

By cutting apart enclosed hood 20 at above-mentioned plane of inclination Sf as mentioned above, above-mentioned first cuts apart the branched pipe section 27 and the distance between the above-mentioned connecting part 25 in the cover 21, compares far away at bottom 25d at top 25u.Therefore, aforesaid operations gear 52 and operation cap 101 are arranged on the top 25u that first of above-mentioned distance is cut apart cover 21.

On the other hand, as shown in Figure 9, driven gear 51 only is arranged on the one-sided of valve body 5.

Other structure is identical with embodiment 1, to identical part or the suitable identical label of part mark, and omits its detailed explanation.

Embodiment 4:

Figure 10 A～Figure 12 represents embodiment 4.

Shown in Figure 10 A and Figure 10 B, branch unit 2C and above-described embodiment 3 of present embodiment 4 are same, be provided with operation gear 52 and operation cap 101 at the first top 25u of cutting apart cover 21, and it is divided on the plane of inclination Sf that tilts with respect to the imaginary plane H with the axis 27L quadrature of branched pipe section 27 to cut apart cover 21,22.

Shown in Figure 10 A, operation gear 52 is made of the so-called Hindley worm gear (globoid worm gear) that worm screw 52a and worm gear 52b form.The axis 52c of above-mentioned worm screw 52a is configured to parallel with the roughly caliber direction C2 that lays pipe 1.On the other hand, shown in Figure 11 D, the axis 52d of worm gear 52b is configured to parallel with the tube axial direction L that lays pipe 1.

Shown in Figure 10 A and Figure 10 B, driven gear 51 and above-mentioned worm gear 52b interlock.

Shown in Figure 11 B, above-mentioned driven gear 51 is arranged on the substantial middle of valve body 5, and, shown in Figure 11 A～Figure 11 C, around valve body 5, be formed with the section of being close to 57 that valve position and rubber ring 56 (Figure 11 D) are adjacent to that closes at Figure 12 B.

Therefore, when the operator made 101 rotation of operation gear, valve body 5 rotated to the valve position that closes shown in Figure 12 B from the valve position of opening of Figure 12 A, and the section of being close to 57 of Figure 11 B is adjacent to the rubber bushing 56 of Figure 11 D, is sealed in the enclosed hood 20 shown in Figure 10 B.

On the other hand, operation gear 52 is made of worm screw 52a and worm gear 52b, and therefore, reduction speed ratio increases, even at the larger hydraulic pressure of enclosed hood 20 internal loadings, also can drive valve with little steering force when opening valve.

Shown in Figure 11 D, rubber bushing 26 is adjacent to the outer circumferential face 13 of laying pipe 1 shown in the double dot dash line in two ends of the aforementioned tube axle direction L of cutting apart cover 21 (22), and covers the pipe week that this has laid pipe 1.

Embodiment 5:

Figure 13 A～Figure 14 B represents embodiment 5.

In the valve body 5 of Figure 13 B, the first surface of contact 5f that represents with the site contacts with rubber ring 56 when the valve body 5 shown in Figure 14 B.Above-mentioned the first surface of contact 5f is configured to ring-type, with from surrounding driven gear 51 on every side fully.

Shown in Figure 13 A and Figure 14 B, above-mentioned the first surface of contact 5f is more outstanding to outside C2 radially than the surface of driven gear 51.Shown in Figure 13 B, the close driven gear 51 of base portion 5f1 among above-mentioned the first surface of contact 5f, and the other parts 5f2 among the first surface of contact 5f forms the C word shape.

Shown in Figure 13 D, Figure 14 A and Figure 14 B, the cutting lines 25L of connecting part 25 is at the center curvature on top.Thus, rotating machinery 50 can be incorporated in first cut apart the cover 21 in.

Embodiment 6:

Figure 15 A～Figure 17 D represents embodiment 6.

The cross section of the above-mentioned valve body 5 of Figure 15 A is circular arc, can cover above-mentioned perforate 11 and inaccessible above-mentioned branched hole 28 close valve position and not coverage diagram 15B above-mentioned perforate 11 but opening between the valve position of being communicated with above-mentioned branched hole 28 of above-mentioned perforate 11 managed 1 circumferencial direction and moved back and forth along above-mentioned the laying.

Above-mentioned valve body 5 and above-mentioned valve seat 56 are formed, along with above-mentioned valve body 5 from the above-mentioned valve position rotary moving of opening of Figure 15 B to the above-mentioned valve position that closes of Figure 15 A, above-mentioned valve body 5 shortens in the distance that above-mentioned footpath of having laid pipe 1 makes progress gradually with above-mentioned valve seat 56.That is the radius of curvature r1 of the surface of contact 56f of the above-mentioned valve seat 56 that, contacts with above-mentioned valve body 5 is along with above-mentioned valve body closes valve position and diminishes continuously and gradually near above-mentioned from the above-mentioned valve position of opening.

In the situation of present embodiment, be provided with rubber lining (the water tightness sealing parts) 5r that contacts to seal with the surface of contact 56f of above-mentioned valve seat 56 at the first surface of contact 5f of the valve body 5 shown in Figure 16 B, Figure 17 A～Figure 17 C.Above-mentioned rubber lining 5r is preferably on adding of rubber be integrally formed in valve body 5 when sulphur is shaped the metal part.In this case, sealed member is difficult to peel off.

In addition, above-mentioned rubber lining 5r also can cover the whole metal part of above-mentioned valve body 5.In this case, the position of the driven gear 51 of valve body 5 is also covered by above-mentioned rubber lining 5r.Driven gear 51 is being implemented in the situation of japanning, and the japanning on the surface of driven gear 51 scratches easily, and rubber lining 5r then is difficult to scratch.

It is integrally formed that press section 59 and first is cut apart cover 21, the above-mentioned valve position that closes at Figure 15 A, along with above-mentioned valve body 5 further moves to closing the valve direction, above-mentioned press section 59 presses to above-mentioned radial outside with above-mentioned valve body 5, so that above-mentioned valve body 5 is crimped on the above-mentioned valve seat 56.Press section 59 has concurrently and prevents that valve body 5 is in the function of closing the stopper of the excess of stroke on the valve direction.

In Figure 16 A, above-mentioned valve body 5 comprise along the above-mentioned concave surface 5a that has laid pipe 1 outer circumferential face 13 bendings, above-mentioned close valve position and above-mentioned branched hole 28 relative to convex surface 5b.Above-mentioned driven gear 51 forms at the above-mentioned convex surface 5b of above-mentioned valve body 5.To have laid on pipe 1 the caliber direction C1 surface than above-mentioned driven gear 51 outstanding above-mentioned for the surface of contact 5f (Figure 16 B) that contacts with above-mentioned valve seat 56 among the above-mentioned convex surface 5b.

Shown in Figure 15 A, above-mentioned first and second cut apart cover 21,22 inner peripheral surface 29 with above-mentioned laid to manage between 1 the outer circumferential face 13 be provided with the holding space S that holds valve body 5.

Also can in above-mentioned enclosed hood 20, arrange and be used for preventing the break that valve body 5 exceeds at valve opening position.

Embodiment 7:

Figure 18 A～Figure 19 B represents the embodiment 7 of branch unit 2D.

Shown in Figure 19 A, enclosed hood 20 be included in lay pipe 1 circumferencial direction divided a plurality of cut apart cover 21,22 and with above-mentioned a plurality of cut apart first in the

cover

21,22 cut apart cover 21 integrally formed and in the footpath of laying pipe 1 outstanding the and branched pipe section 27 of branch upwards.

Shown in Figure 18 A, valve body 5A is cut apart cover 21 inner peripheral surface 29 above-mentioned first and is managed between 1 the outer circumferential face 13 with having laid, mobile by sliding along the tube axial direction of laying pipe 1, open and close the branched hole 28 of above-mentioned branched pipe section 27, and, above-mentioned branched hole 28 openings open under the valve state with above-mentioned laid pipe 1 contiguous and relative to.

Valve seat 56A forms at the above-mentioned first inner peripheral surface 29 of cutting apart cover 21, and above-mentioned valve body 5A is in contact with it when cut-off valve.

Be provided with the 50A of mobile mechanism that above-mentioned valve body 5A is moved.

In the situation of present embodiment, shown in Figure 19 A, above-mentioned valve body 5A forms cross section and is the circular-arc shape of extending along above-mentioned tube wall 12.

In the situation of present embodiment, the valve body 5A of Figure 18 A and Figure 18 B slides along tube axial direction 27L and moves and open and close above-mentioned branched hole 28.Cut apart cover 21 first and be formed with the holding space S that holds the valve body 5A that is in out valve position between managing 1 with having laid.

In the present invention, also can the enclosed hood of this branch device is integrally formed with the enclosed hood that is used for the insertion valve.Can also rubber ring 56 be set at valve body 5.In this case, form the groove that is used for installing rubber ring 56 at valve body 5.In addition, valve seat 56 is not must be circular.

Industrial applicibility

Branch device for noninterruptive flow boring of the present invention can use in the situation of having laid pipe extraction branch from running water pipe or gas pipe etc.

Claims

1. branch unit of perforation usefulness that continues to flow is suitable for using the punch that is equipped with hole opening saw that the part of the tube wall of laying pipe is bored a hole and forms perforate at described tube wall, and has laid pipe at this and connect branch's pipe arrangement, comprising:

Enclosed hood, this enclosed hood is included in divided on the circumferencial direction of laying pipe and cuts apart cover and second around first of a part of laying pipe cuts apart cover, cuts apart to cover to be formed with in the footpath of laying pipe described first and upwards gives prominence to and the branched pipe section of branch;

Have the valve body that cross section is the part of circular arc, by at the inner peripheral surface of described enclosed hood and laid between the outer circumferential face of pipe, along the circumferencial direction rotation of having laid pipe, the branched hole of described branched pipe section is opened and closed;

Valve seat forms at described the first inner peripheral surface of cutting apart cover, contacts with described valve body when closing valve; With

Rotating machinery is used for making described valve body rotation,

Cut apart cover and described the laying between the pipe described first, be provided with the circular-arc described part of holding described valve body and the first space that described part can be moved,

Cut apart cover and described the laying between the pipe described second, be provided with the circular-arc described part of holding described valve body and the second space that described part can be moved,

Described the first space and second space are communicated with each other in a circumferential direction,

Make when driving valve major part be accommodated in the circular-arc described partial rotation of the described valve body of described second space by described rotating machinery, with the inaccessible described branched hole of circular-arc described part of described valve body.

As claimed in claim 1 continue to flow the perforation usefulness branch unit, it is characterized in that:

The cross section of described valve body is circular arc, described valve body can cover closing valve position and not covering described perforate but with opening between the valve position that described perforate is communicated with described branched hole of described perforate and inaccessible described branched hole, move back and forth along the described circumferencial direction of having laid pipe

Described valve body and described valve seat are formed, along with described valve body from the described valve position rotary moving of opening to the described valve position that closes, the Distance Shortened that described valve body and described valve seat make progress in described footpath of having laid pipe.

As claimed in claim 2 continue to flow the perforation usefulness branch unit, it is characterized in that:

Described valve seat has the surface of contact that contacts with described valve body, and the radius of curvature of described surface of contact is along with described valve body closes valve position and diminishes continuously and little by little near described from the described valve position of opening.

Comprise press section, at the described valve position that closes, along with described valve body further moves to closing the valve direction, described press section pushes described valve body to the described outside radially, so that described valve body is crimped on the described valve seat.

Described valve body comprises: along the concave surface of described outer circumferential face bending of having laid pipe with described close valve position relative with described branched hole to convex surface,

Described rotating machinery comprises: be rotated the operation gear of operation outside the described enclosed hood and with described operation engaged gears and rotate the driven gear of open-close valve at described circumferencial direction along with the rotation of described operation gear,

Described driven gear forms at the described convex surface of described valve body,

The surface of contact that contacts with described valve seat of described convex surface surface than described driven gear on described caliber direction of having laid pipe is outstanding.

Be provided with the parts of water tightness sealing usefulness at the surface of contact that contacts with described valve seat of described valve body.

Described rotating machinery comprises: be rotated the operation gear of operation outside the described enclosed hood and with described operation engaged gears and rotate the driven gear of open-close valve at described circumferencial direction along with the rotation of described operation gear.

As claimed in claim 7 continue to flow the perforation usefulness branch unit, it is characterized in that:

On the plane of inclination that tilts with respect to imaginary plane, described first cuts apart cover and described second cuts apart and covers on the connecting part and mutually combined, and described imaginary plane is the plane with the axis quadrature of described branched pipe section,

Cut apart enclosed hood in described plane of inclination as described above, described first to cut apart described branched pipe section on the cover and the distance between the described connecting part larger than cutting apart the bottom of cover described first on the described first top of cutting apart cover,

Dispose described operation gear on described top.

Second cut apart cover and be provided with described operation gear what do not have described branched pipe section.

The guide portion that the rotation of described valve body is guided is arranged on described enclosed hood integratedly.

11. the branch unit of the perforation usefulness that continues to flow as claimed in claim 8 is characterized in that:

Described operation gear is set at the roughly caliber direction of laying pipe by axis worm screw is set to the worm gear parallel with the tube axial direction of laying pipe with axis and consists of,

Described driven gear described valve body form and with described worm gear interlock.

12. the branch unit of the perforation usefulness that continues to flow as claimed in claim 1 is characterized in that:

First cut apart cover what have described branched pipe section, the rubber ring of the sealing usefulness of ring-type is housed around the branched hole of described branched pipe section.

13. the branch unit of the perforation usefulness that continues to flow is suitable for using the punch that is equipped with hole opening saw that the part of the tube wall of laying pipe is bored a hole and forms perforate at described tube wall, and has laid pipe at this and connect branch's pipe arrangement, comprising:

Enclosed hood, this enclosed hood be included in divided on the circumferencial direction of laying pipe and around a part of having laid pipe a plurality of cut apart cover and with described a plurality of cut apart first in the cover cut apart cover integrally formed and in the footpath of laying pipe the outstanding and branched pipe section of branch upwards;

Cross section is circular arc or circular valve body, by at the inner peripheral surface of described enclosed hood with laid between the outer circumferential face of pipe, rotate along the circumferencial direction of having laid pipe, the branched hole of described branched pipe section is opened and closed;

Rotating machinery is used for making described valve body rotation;

Wherein, described valve body comprises: along the concave surface of described outer circumferential face bending of having laid pipe with described close valve position relative with described branched hole to convex surface,

14. the branch unit of the perforation usefulness that continues to flow is suitable for using the punch that is equipped with hole opening saw that the part of the tube wall of laying pipe is bored a hole and forms perforate at described tube wall, and has laid pipe at this and connect branch's pipe arrangement, comprising:

Rotating machinery is used for making described valve body rotation;

Wherein, described rotating machinery comprises: be rotated the operation gear of operation outside the described enclosed hood and with described operation engaged gears and rotate the driven gear of open-close valve at described circumferencial direction along with the rotation of described operation gear,

Described enclosed hood is made of two described covers of cutting apart, and on the plane of inclination that tilts with respect to imaginary plane, cuts apart and covers on the connecting part and mutually combined for described two, and described imaginary plane is the plane with the axis quadrature of described branched pipe section,

Dispose described operation gear on described top.

15. the branch unit of the perforation usefulness that continues to flow is suitable for using the punch that is equipped with hole opening saw that the part of the tube wall of laying pipe is bored a hole and forms perforate at described tube wall, and has laid pipe at this and connect branch's pipe arrangement, comprising:

Rotating machinery is used for making described valve body rotation;